If your key won’t go into a door lock, don’t reach for the WD-40. All you need is a graphite pencil to solve the problem.

This is a warning. My son is a locksmith and encounters people who have used a lubricant on their locks to try to make them turn more smoothly. I would imagine that this is not good anywhere you live, ...

The Lock Lubricant from Master Lock Co. comes with PTFE formulation for padlocks, door locks, automotive, marine and multipurpose applications. It cleans the lock components but also lubricates and ...